Consolidated Condensed Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Non-controlling Interests
Balance at Dec. 31, 2014	$ 18,730	$ 434	$ 7,062	$ 11,878	$ (749)	$ 0	$ 105
Comprehensive loss:
Net loss	(939)			(936)			(3)
Other comprehensive income	(176)				(176)
Activity related to stock plans	55	2	62			(9)
Stock-based compensation	92		92
Cash dividends	(222)			(222)
Net activity related to noncontrolling interests	(35)		(24)				(11)
Balance at Sep. 30, 2015	17,505	436	7,192	10,720	(925)	(9)	91
Balance at Dec. 31, 2015	16,382	437	7,261	9,614	(1,005)	(9)	84
Comprehensive loss:
Net loss	(2,323)			(2,321)			(2)
Other comprehensive income	66				66
Activity related to stock plans	7	2	18			(13)
Repurchase and retirement of common stock	(763)	(16)	(747)
Stock-based compensation	93		93
Cash dividends	(221)			(221)
Net activity related to noncontrolling interests	(4)						(4)
Balance at Sep. 30, 2016	$ 13,237	$ 423	$ 6,625	$ 7,072	$ (939)	$ (22)	$ 78